Method of forging fulcrums.



C. E. BAUER.

METHOD OF FORGING FULCRUMS. APPLICATION FILED MAY 10. E915- 'Patented Oct. 26, 1915.

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CARL EDWARD BAUER, OF HAMMOND, INDIANA, ASSIGNOR T AMERICAN STEEL. 1

' FOUNDRIES, OF NEW YORK, N.1Y., A CORPORATION OF NEW JERSEY.

METHOD OF FOR-GING FULCRUMS.

Lil-57,833.

Specification of Letters Patent.

Patented Oct. 2c, 1915.

Application filed May' 10, 1915. Serial No. 26,937.

citizen of the United States, and resident of Hammond, inthe county of Lake and State of Indiana, have invented certain new and useful Improvements in Methods of Forging F ulcrums, of which the following is a specification.

My invention relates to brake beams, and has'particular reference to a novel method of forging a. fulcrum for use in connection therewith.

-An object in the construction of brake beams of the trussed type is to provide a fulcrum which shall be rigid and possessed of the requisite stiffness, thereby eliminat ing possible deflection in service. Such a result can be secured in a cast fulcrum, but the weight and cost are somewhat greater than in a forged fulcrum.

An object in the construction of the present device is to provide a fulcrum which shall be possessed of the requisite strength and rigidity without using rivets, and which may be very cheaply produced.

The method andthe obj ect produced thereby will be better understood by reference to the accompanying drawings, wherein-- Fi-gure 1 is an elevation, partly in perspective, of a fulcrum constructed in ac cordance with my invention, Fig. 2 is two views of the bar in its original form, Fig. is a double view of the same bar, to which the reinforcement for the brake pin has been added, Fig. 4 is a view showing the next operation, that is, the twisting operation, Fig. 5 is a view showing the next operation, in which the ends of the bars are bent at right angles, Fig. 6 shows the operation in which the intermediate portion of the bar is twisted with relation to the ends, Fig. 7 shows the step wherein the bar is bent into U-shape, Fig. 8 shows the fulcrum in substantially its completed form, and Fig. 9 shows a modified form of reinforcement for the brake lever pin.

In carrying out my invention, I provide a bar 10, which may be of commercial shape. To this bar, as shown in Fig. 3, I weld disks -11, which disks'later form the reinforcement for the brake lever pin. The reason for this is that the railroads require a bearing of at least three-quarters of an inch for the pin in each of the members .of the fulcrum. After the disks are welded to the bar, the

ends 12 of the bar are offset, as shown in Flg. 4. Following this operation, the extreme ends of the bar are bent at right angles to form feet 13, which parts serve as the attaching lugs, by means of which the fulcrum is secured to the compression member of the brake beam. Following the operation of Fig. 5, the intermediate portion of thebar is twisted at an angle of about 40 to that shown in the preceding figures. This is shown in Fig. 6. After the bar is thus twisted, it is bent into U-shape, as shown in Fig. 7. The saddle It is then forged into the end of the U, and the aperture 15 is drilled through the reinforcements 11.

In the construction shown in Fig. 9, the bar is deflected sidewise, as at 16, to form a recess within which a disk 17 is located and welded. This gives the requisite bearing area for the pin and obviates the possibility of disengagement of the disk from the bar.

lVIany of the operations heretofore described can be carried out simultaneously, and a fulcrum may be formed very quickly, and, therefore, at a small expense. The welding of the disks onto'the bar would preferably be accomplished by the use of electricity, the spot welding method being used. Obviously the steps comprising the method may be varied somewhat, and the form of the device may be changed slightly,

all without departure from the spirit of my invention.

I claim: 1. The method of .forging brake beam fulcrums, which consists in utilizlng a bar of I metal, welding reinforcing disks atpoints intermediate the length thereof, then twisting an intermediate portion of the bar, then bending the ends thereof at right angles to the original plane of the bar, then bending the bar into U-shape, then forging a saddle in one end thereof, then drilling a register ing opening through the reinforcing disks and the bar, substantially as described.

2. The method of forging brake beam fulcrums, which consists in welding metal disks' to a commercial bar, then twisting an intermediate port-ion of said bar to an angle of substantially 40 to the original plane of the bar, then bending the ends of the bar to form attaching lugs, then bending the bar into U-shape and forging a fulcrum in the closed end of the U, then drilling apertures for the brake lever pin through the disks formed thus producing a depression in one.

side.of the bar and a protuberance on the other side. thereof, then locating a disk of metal in said recess after bringing ,said barj and disk to a Welding temperature, then 10 compressing said disk in the recess and i welding the same therein. M

Signed at Hammond, Indiana, this 4th day of May, 1915.

v -CARL EDVARD BAUER.

Witnesses: g

A. D. SHANKLIN, J. H. PEARSON. 

